Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A Cost-effective Site Selection Model for Biodiversity Conservation

20.09.2007
In the past 20 years, several strategies have been developed to guide decision-makers in selecting reserves for biodiversity maintenance.

These strategies are often based on a single objective (e.g. species richness conservation or species abundance conservation), a constant site protection cost (regardless of the location and productivity of the site) and a spatial scale that are not always relevant for decision-making.

In this regard, Finnish researchers have developed a new model to select several alternative sites so they can be compared for efficient biodiversity maintenance. From this, they determined the site that would be selected to meet both budget constraints and one or more conservation objectives (species richness, red-listed species or species abundance preservation).

The outcome is therefore a cost-effective solution, which takes into account the monetary losses resulting from protecting the selected areas (e.g. the revenue losses due to harvest restrictions). The authors calibrated their model on 32 semi-natural old-growth forest stands in Finland, which contain 632 species, 18 of them red-listed in Finland according to the IUCN1 criteria.

Their modelling reveals that:

The benefits from conservation increase with the conservation budget, but at a diminishing rate.

The site selection varies depending upon the single conservation objective.

When selection is based on multiple objectives, conflicts appear between protecting red-listed species and maintaining species richness. Results show that selecting sites to protect 6% more red-listed species diminishes the overall species richness by 3%.

As the marginal costs of conservation increase as the number of selected sites increases, the authors conclude that it is not economically efficient to protect all the species in every region or planning area. In addition, they highlight that protecting red-listed species is often in conflict with other conservation objectives (such as species richness preservation). As a consequence, trade-offs appear between conservation objectives.

Practically, they indicate that if the budget for conservation is low, it might be reasonable to make a pre-selection of sites based on the ecological information available and to then choose the sites that are the cheapest to protect. On the contrary, if the conservation budget is high, the sites should be selected in a complementary way. The authors also note that generally focussing on red-listed species might be reasonable, as they are a conservation priority.

Overall, this model provides new insight and new support for decision-making, which could be useful to achieve the EU target of halting biodiversity losses by 2010.

Liisa Harjula | alfa
Further information:
http://www.jyu.fi
http://ec.europa.eu/environment/nature/biodiversity/current_biodiversity_policy

More articles from Ecology, The Environment and Conservation:

nachricht How fires are changing the tundra’s face
12.12.2017 | Gesellschaft für Ökologie e.V.

nachricht Using drones to estimate crop damage by wild boars
12.12.2017 | Gesellschaft für Ökologie e.V.

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

Im Focus: Successful Mechanical Testing of Nanowires

With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong

Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Long-lived storage of a photonic qubit for worldwide teleportation

12.12.2017 | Physics and Astronomy

Multi-year submarine-canyon study challenges textbook theories about turbidity currents

12.12.2017 | Earth Sciences

Electromagnetic water cloak eliminates drag and wake

12.12.2017 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>